I had Zach do mine on a dyno and I'm guessing that is the most efficient way. After the dyno he got in the right seat with his computer and had me do some hard pulls to further dial things in. I'm thinking that you don't need a dyno first as you just do pulls with the unit plugged in then email to your remote tuner. There would most likely be a few go rounds of this to get things dialed in however it's probably close enough to not make much of a difference.
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